In article <3909babb@news.povray.org>, "Bob Hughes" 
<per### [at] aolcom?subject=PoV-News:> wrote:

> Is this on a separate plane between the camera and scene?

I'm not sure what you mean...it is a post_process filter, not a part of 
the scene, it is applied to the image itself.
What it does is evaluate the the pigment as though the upper-left corner 
is <0,0,0> and the lower right is <1,1,0>.(that should probably be 
changed to <0,1,0> and <1,0,0> though, to make image_maps easier to use)

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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